Improvement in middlings-bolts



A. s. &.H.fw. Newman.

Middlings Bolts.

Patented Novl 18,'18-73.

vNo. 144,783.

UNITED STATES PATENT EEICE'.

ALFRED G. MOWBRAY AND HARRY W. MOWBRAY, OF STOOKTON, MINN.

IMPROVEMENT IN MlDDLlNGS-BOLTS.

Specification forming part of Letters Patent No. 144,783, dated November18, 1873; application led September 11, 1873.

and the former carried to the next bolt, this being repeated until themiddlings become clear and pure.

In the drawings, Figure l represents an end view of my mddlingsbolts,showing their position, &c. Fig. 2 is a sectional plan view; Fig. 3, anend view, showing the ends of conveyer-boxes, and the manner of beltingthe bolts together.

The letters A, B, C, D, E, and F represent the series of bolts, whichare arranged one above the other, as shown, and each having conveyers ac, and intermediate slides b b. G represents the driving-pulley, andwhich serves to impart motion to the whole series of bolts by thearrangement of bolts shown in Fig. 3. The middlings are introduced atthe spout o, where they are carried into the bolt A, and are thereinbolted by sifting through the different grades of cloth :into theconveyer a. The best portion of the product comes through one end of thebolts, and the light bran is carried to the other end, when,

by opening the slides b, the separated bran is allowed to pass onto theconveyer c, which latter carries off the bran at the point g, Fig. 2.The middlings are carried by the conveyer a, and emptied or caused topass into the bolt B; (which is covered with a iner grade of cloth frombolt A,) and in this bolt the same operation occurs that is abovedescribed, the light bran being carried off at one end, and the inidrlhecombination of a series of bolts of small tember, 1873.

ALFRED G. MOWBRAY. HARRY W. MOWBRAY.

WVitnesses:

R. R. BRrGGs, ABNER LEWIS.

